Carburetor



Y Sept. 30, 1930. H. scHNEEBELI' l 1,777,229:

CARBURETOR Filed Oct. 5. 1928 Patented Sept. 30, 1930 PATENT eprice HUGOSCHNEEBELI, QF COURBEVOIE, FRANCE CABIBURETOR Application `filed October3, 1928, Serial No. 310,009, and in France October 24, 1927.

The present invention relates to a carburetor for explosion engines moreparticularly adapted for use with automobile ve-h hicles or apparatusfor aerial navigation, 5 whichis constructed in such a manner as tocompriseneither constantlevel chamber nor gas throttle, -with a View tosimplifying the construction or" the apparatus, of reducing its costconsiderably as a consequence and, 10 moreoverconstructing Van apparatustaking up a minimum amount of space.

The carburetor forming the subjectofthis linvention presents thefollowing essential features:

l. The nozzle, the section of the outletorifice of which can beregulated by operating a needle valve or other suitable closing means,is located in a chamber which comprises -apertures `for they admissionof the vprimary air and is in constant and direct communication with thesuction of the enine. g 2. VThe diffuser is directly mounted upon thesuction pipe of the engine and on the other hand leads into a chamberpierced with aperturesfor the admission of theair for' the combustion. f

3. .L-movable member interposed between the diffuser and the chamberenclosing the nozzle is adapted to lead into the diffuser, the mixtureyformed in the chamber of the nozzle, and to regulate the yadmissionintothe diiiuser of the iair for the combustion and consequently the qualityof the explosive mix- Cil ture to be supplied to the engine,this movablemember being connected to the nozzle obturator by a lever or othertransmission arranged in such a manner that:

' (a) When the nozzle obturator is brought into the positioncorresponding to the minimum'delivery of the nozzle, the movable memberwill fit into the diffuser in 'order to connect the chamber of thenozzle directly with the diiuser and limit to aminimum the admission ofthe combustion Vair into the latter, sothat the suction exerted in thenozzley chamber bythe suction of the' engine is `a maximum landtheengine is supplied 50 during slow running by an eXplosivemiXture maximumthe movable member will be brought outside the diuser in such a man-Vner as to permit amaximum Vadmission of air Y kfor the combustion.

In order to make the invention clear, one embodiment of the carburetorforming its subject will bedescribed hereinafter by way of example onlyand with reference to the accompanying drawing. f

As shown in this drawing the carburetor which is shown in verticallongitudinal section comprises a single nozzle 1 whichA is located in achamber 2 comprising at its base any number of apertures 3 for admittingprimary air into the said chamber.

This chamber 2 is secured upon atubular support 4 which is in directcommunication with the petrol tank by means of a pipe 5.

In the interior of this support4 is mounted a sleeve 6 which issurrounded byfa filter formed by metal gauge 7 andis pierced withv'oriiices 8 arranged in such a way as to lead the ltered petrol to thenozzle.` v v vThe upper orifice of the nozzle-l is of adjustablesectionso as topermitthedelivery of this nozzlev to be varied accordingto requirements.`

In the embodiment illustratedthis regulation otthedelivery is effectedby means of n a needle valve A9 arranged 1n alignment with the nozzleand rigid with a'screw-tl1readed rod l0 which is engaged in a lnut 1land adapted to receive a movement of rotation adjustable in amplitudefor raising 'and lowering the needle valve above the nozzle.

Y The rectilinear movements ofthe needle Vvalve Qmay bel controlledeither byha'nd thc'driver or lmechanically by a speed regulator whentheengine supplied by the carburetor, according to the invention, isprovided with one. Y

For this purpose the screw-threaded rod is provided with a lever 12adjustable in direction and connected to an operating lever 13 by a pin14, the'position of which upon the lever 12, can b regulated by means ofi a. slot: 15 cut in the said lever.

As'shown in this drawing, the nut 11 in which'ethe rodof the needlevalve is mounted, is secured in a support 16 which lis rigidlysecuredupon the engine by means of the base 17 of a chamber 18 enclosingthe difuser 1,9 and the wall oiwhich is pierced withY a certain numberofapertures 20 petting Vthe interior of the said chamber 18 incommunicatien with the atmosphere.

The support 16 is pierced dinal channel 21 in the interior of which ismounted and slides with easy friction a cylindrical sleeve 22, thelongitudinal axis of which is situated in alignment with that of thediffuseraY rEhis sleeve 22 is traversed, at'a certain point along itslength by the needle valve 9 1 and comprises, at two diametricallyopposite Y ints, two rectilinear slots. 23 permitting the.

ong'itudinal displacements of the sleeve 22. At one end, `this sleeve 22which communirates freely with the chamber 2 of the nozzle through oneofthe slots 23, is provided with a plug 24 through which are Ypiercedlongitudinal channels 25 of small section, the plug being screwed intothe conical head 26 of the said sleeve and bearing* against the largerhaseof this. head 26 by a circular flange 27 ofs'uitable frusto-conicarsection so that it will engage at times with slight clearance in thediffuser'l9. i

At its opposite end, the sleeve 22 is also provided with a screw plug 28pierced with Bfduct 29 of 'suitable'size putting the interior i ofthesaidsl'eeve into communication with the atmosphere. l Y

Thecposition of the sleeve 22 in thesup- `port 16 is regulated at willand this sleeve 1s for this purpose connected to the screw threaded rod10 of the lneedle valve 9 by means o a lever'30 which is rigid with thesaid rod upon which it can beregulated angularly andV carries in a slot-31 a pin 32Y serving as a pointof attachment lfor alink 33 pivotallymounted upon a trunnion 34 rigid with the sleeve 22. c

It will be understood from the foregoing thatthesle'eve 22 follows thedisplacements imparted to the needle valve 9 by the control levelg 13and that it is sufficient to act upon the latter in order to varysimultaneously the sition of the said needle valve 9 and that of 'thesleeve 22. The levers 30 and 32 being arranged in suc a 4way that at theend of the downward travel of the needle-valve 9 corresponding toth'minimum delivery of the nozzle, the sleeve with a longituwill bebrought into a position such that the conical flange 27 of the latterwill engage in the central orifice 19 of the diffuser 19 in order toreduce the section of this oriiice 19n to a minimum. It will beunderstood that the partial vacuum produced by the engine in the nozzleis transmitted through the ducts 25 andthe sleeve 22 into the chamber ofthe nozz1e,'so that `the engine is supplied, for this position of theneedle valve 9 and of the sleeve 22, by the rich mixture formed in thechamber 2 and mixed with the additional air drawn into the sleeve 22through the orifice 29 and with the air for the combustion drawn throughthe orifices 19 andpenetrating into the diffuser through the annularspace of minimum section tleft between `the conical 'iange 27 ofthelplug 24 and the inner wall of the diuser.

This position of the needle valve 9 and of the sleeve 22 corresponds toslow running.

lIt will be understoodthat, for a covering speed, it is sufficientf toact upon the lever .lf3 in the proper direction, in Aorder to pro ducegradually the lifting of the needle valve `9 and the separation of thesleeve 22 from the nozzle and thus increase gradually the delivery 'ofthe nozzle and the-amount of air admitted for the combustion and thusmodify the richness of the mixture supplied to the engine. f

At high speeds, theneedle 4valve 9 is broughtu tothe end of its upwardtravel and the-sleeve 22 tothe end `of its travel away from the diffuserso that the delivery of the nozzle Yis at its maximum. Incidentally 'atthis timethe passage for the admission of air is fully open in order toobtain the suitable explosive mixture.

rlhe arrangements described are naturally vonly given by way of exampleand the shapes, materialsland dimensions of the constituent parts aswell as the constructional.details maybe modified without c-hanging theinvention in any way. Y

To sum up, the present invention relates to a carburetor for supplyingexplosion engines, more particularly adaptedffor use on automobilevehicles and apparatus for aerial navigation. 1 i Claims L .71. Acarburetorfor explosion engines comprising, a carburetor body enclosinga chamber for the admission of primary air and an atomizing chamberfollowing the chamber for the admission of primary air, anozzle locatedinthis primary air inlet chamber and arranged in direct communicationwith a Vgasoline tank and opening inthe atomizing chamber, a diffuserdirectly branched on the ysuction pipe yof the engine, achamber Jfor theadmission of the air for the combustion and openino'into the diflasen'anut securedl in the ybody the carburetor, a screw needle valve inengagement with the inner screw'thread of the said nut and adapted to berotated manually in yone direction or the other and to obturate more orless the outlet orice of the nozzle, a sleeve opening at its free end tothe atmosphere and opening at its opposite end in the chamber for theadmission of the air for the combustion and longitudinally movable inthe body of the carburetor for regulating the admission of the air forthe combustion in the diffuser, said sleeve being provided with openingson a portion of its length adapted to put the atomizing chamber incommunication either with the chamber for the admission of the air forthe Vcombustion or with the suction pipe of the engine according to theposition given to the sleeve, means for simultaneously controlling theposition of the needle valve and the sleeve.

2. A carburetor for explosion engines coinprising, a carburetor bodyenclosing a chamber for the admission of primary air and an atomizingchamber following the chamber for the admission of primary air, a nozzlelocated in this primary air inlet chamber and arranged in directcommunication with a gasoline tank and opening` into the atomizingchamber, a diuser directly branched on the suction pipe of the engine, achamber for the admission of the air for the combustion and opening`into the ditfuser, a nut secured in the body of the carburetor, a screwneedle valve in engagement with the inner screw thread of the said nutand adapted to be manually rotated in one direction or the other and toobturate more or less the outlet oriice of the nozzle, a sleeve openingat its free end to the atmosphere and opening at its yopposite end intothe chamber for the admission of the air for the combustion andlongitudinally movable in the body of the carburetor for regulating theadmission of the air for the Vcombustion in the diffuser, said sleevebeing provided with openings on a portion of its length adapted to putthe atomizing chamber in communication either with the chamber for theadmission of the air for the combustion, or with the suction pipe of theengine according to the position given to the sleeve, two leversadjustable'in position rigidly secured on the screw threaded rod of theneedle valve, a manually operable member, a link connecting one of theselevers to said meme ber and anotherA link connecting the other lever tothe said sliding sleeve adapted to transmit to said sleeve suitabledisplacements for automatically regulating the admission of the air forthe combustion according to the position given to the needle valve regulating the outflow of the nozzle.

The yforegoing specification or" my carburetor for explosion engines7signed by me this 21st day of September, 19:28.

HUGO SCHNEEBELI.

